My male snow bengal kitten (6 months, 10 pounds) enjoys this tree very much. When he climbs on it quickly it does wobble a little  bit but it doesn't topple. I switched the two platforms to that the one with the hole is on the top and the one with the rope is on the bottom. This makes it easier for him to get to the higher platforms. Because this is so vertically aligned it might be helpful to place this near a window sill so that your cat can have more breadth to move.

Pros: Modern-looking color, soft carpet, somewhat customizable
Cons: Could have a larger base to keep it more stable